US20210382278A1 - Camera optical lens - Google Patents

Camera optical lens Download PDF

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US20210382278A1
US20210382278A1 US17/134,506 US202017134506A US2021382278A1 US 20210382278 A1 US20210382278 A1 US 20210382278A1 US 202017134506 A US202017134506 A US 202017134506A US 2021382278 A1 US2021382278 A1 US 2021382278A1
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lens
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camera optical
object side
optical lens
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US12000980B2 (en
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Rongbao Shi
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AAC Optics Changzhou Co Ltd
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AAC Optics Changzhou Co Ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/146—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having more than five groups
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0012—Optical design, e.g. procedures, algorithms, optimisation routines
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/62—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having six components only

Definitions

  • the present application relates to the field of optical lenses, and more particularly, to a camera optical lens suitable for portable terminal equipment such as smart phones and digital cameras, and camera devices such as monitors and PC lenses.
  • the photosensitive device of a general photographic lens is nothing more than a Charge Coupled Device (CCD) or a Complementary Metal-oxide Semiconductor Sensor (CMOS Sensor).
  • CCD Charge Coupled Device
  • CMOS Sensor Complementary Metal-oxide Semiconductor Sensor
  • the pixel size of the photosensitive devices is reduced.
  • the development trend of today's electronic products is having good functions with a thin and short appearance. Therefore, miniaturized camera lenses with a good imaging quality have become the mainstream in the current market.
  • the camera optical lens includes from an object side to an image side: a first lens having positive refractive power, a second lens having negative refractive power, a third lens having positive refractive power, a fourth lens having negative refractive power, a fifth lens having positive refractive power and a sixth lens having negative refractive power, wherein the camera optical lens satisfies:
  • f denotes a focal length of the camera optical lens
  • f3 denotes a focal length of the third lens
  • R3 denotes a curvature radius of an object side surface of the second lens
  • R4 denotes a curvature radius of an image side surface of the second lens
  • d1 denotes an on-axis thickness of the first lens
  • d2 denotes an on-axis distance from an image side surface of the first lens to the object side surface of the second lens
  • d7 denotes an on-axis thickness of the fourth lens
  • d8 denotes an on-axis distance from an image side surface of the fourth lens to an object side surface of the fifth lens.
  • the camera optical lens satisfies: ⁇ 1.00 ⁇ f6/f ⁇ 0.50, where f6 denotes a focal length of the sixth lens.
  • the camera optical lens satisfies:
  • f1 denotes a focal length of the first lens
  • R1 denotes a curvature radius of an object side surface of the first lens
  • R2 denotes a curvature radius of the image side surface of the first lens
  • TTL denotes a total optical length from the object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
  • the camera optical lens satisfies:
  • f2 denotes a focal length of the second lens
  • d3 denotes an on-axis thickness of the second lens
  • TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
  • the camera optical lens satisfies:
  • R5 denotes a curvature radius of an object side surface of the third lens
  • R6 denotes a curvature radius of an image side surface of the third lens
  • d5 denotes an on-axis thickness of the third lens
  • TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
  • the camera optical lens satisfies:
  • f4 denotes a focal length of the fourth lens
  • R7 denotes a curvature radius of an object side surface of the fourth lens
  • R8 denotes a curvature radius of the image side surface of the fourth lens
  • TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
  • the camera optical lens satisfies:
  • f5 denotes a focal length of the fifth lens
  • R9 denotes a curvature radius of the object side surface of the fifth lens
  • R10 denotes a curvature radius of an image side surface of the fifth lens
  • d9 denotes an on-axis thickness of the fifth lens
  • TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
  • the camera optical lens satisfies:
  • R11 denotes a curvature radius of an object side surface of the sixth lens
  • R12 denotes a curvature radius of an image side surface of the sixth lens
  • d11 denotes an on-axis thickness of the sixth lens
  • TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
  • the camera optical lens satisfies: TTL/IH ⁇ 1.17, where IH denotes an image height of the camera optical lens, and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
  • a field of view of the camera optical lens is FOV
  • FOV field of view of the camera optical lens
  • the camera optical lens has the following beneficial effects: the camera optical lens has excellent optical characteristics, has the characteristics of large aperture, wide angle and ultra-thinning, and is especially suitable for mobile phone camera lens assemblies and WEB camera lenses composed of camera elements such as high-pixel CCDs and CMOSs.
  • FIG. 1 is a schematic structural diagram of a camera optical lens according to a first embodiment of the present application
  • FIG. 2 is a schematic diagram of an longitudinal aberration of the camera optical lens shown in FIG. 1 ;
  • FIG. 3 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 1 ;
  • FIG. 4 is schematic diagrams of a field curvature and a distortion of the camera optical lens shown in FIG. 1 ;
  • FIG. 5 is a schematic structural diagram of a camera optical lens according to a second embodiment of the present application.
  • FIG. 6 is a schematic diagram of an longitudinal aberration of the camera optical lens shown in FIG. 5 ;
  • FIG. 7 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 5 ;
  • FIG. 8 is schematic diagrams of a field curvature and a distortion of the camera optical lens shown in FIG. 5 ;
  • FIG. 9 is a schematic structural diagram of a camera optical lens according to a third embodiment of the present application.
  • FIG. 10 is a schematic diagram of an longitudinal aberration of the camera optical lens shown in FIG. 9 ;
  • FIG. 11 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 9 ;
  • FIG. 12 is schematic diagrams of a field curvature and a distortion of the camera optical lens shown in FIG. 9 ;
  • FIG. 13 is a schematic structural diagram of a camera optical lens according to a fourth embodiment of the present application.
  • FIG. 14 is a schematic diagram of an longitudinal aberration of the camera optical lens shown in FIG. 13 ;
  • FIG. 15 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 13 ;
  • FIG. 16 is schematic diagrams of a field curvature and a distortion of the camera optical lens shown in FIG. 13 .
  • FIG. 1 shows a camera optical lens 10 according to a first embodiment of the present application.
  • the camera optical lens 10 includes six lenses, which include an aperture S1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6 in sequence from the object side to the image side.
  • Optical elements such as an optical filter GF may be disposed between the sixth lens L6 and an image plane Si.
  • the first lens L1 has positive refractive power
  • the second lens L2 has negative refractive power
  • the third lens L3 has positive refractive power
  • the fourth lens L4 has negative refractive power
  • the fifth lens L5 has positive refractive power
  • the sixth lens L6 has negative refractive power.
  • the first lens L1 is made of plastic
  • the second lens L2 is made of plastic
  • the third lens L3 is made of plastic
  • the fourth lens L4 is made of plastic
  • the fifth lens L5 is made of plastic
  • the sixth lens L6 is made of plastic.
  • a focal length of the camera optical lens 10 is defined as f
  • a focal length of the third lens L3 is defined as f3, which satisfy a following relation: 6.50 ⁇ f3/f ⁇ 10.00.
  • the relation specifies a ratio of the focal length of the third lens to the total focal length, which is helpful to aberration correction and improve imaging quality within the range of the condition.
  • a curvature radius of an object side surface of the second lens L2 is defined as R3, and a curvature radius of an image side surface of the second lens L2 is defined as R4, which satisfy a following relation: 1.50 ⁇ (R3+R4)/(R3 ⁇ R4) ⁇ 3.00.
  • the relation specifies the shape of the second lens L2, and the sensitivity of the second lens meeting the condition is low, which is beneficial to improve the production yield.
  • An on-axis thickness of the first lens L1 is defined as d1
  • an on-axis distance from an image side surface of the first lens L1 to an object side surface of the second lens L2 is defined as d2, which satisfy a following relation: 8.00 ⁇ d1/d2 ⁇ 10.50.
  • d1 an on-axis thickness of the first lens L1
  • d2 an on-axis distance from an image side surface of the first lens L1 to an object side surface of the second lens L2
  • An on-axis thickness of the fourth lens L4 is defined as d7, and an on-axis distance from an image side surface of the fourth lens L4 to an object side surface of the fifth lens L5 is d8, which satisfy a following relation: 1.50 ⁇ d8/d7 ⁇ 2.00. Within the range of the relation, it is helpful to compress the length of the system and realize ultra-thinning.
  • the focal length of the camera optical lens 10 is f
  • a focal length of the sixth lens L6 is defined as f6, which satisfy a following relation: ⁇ 1.00 ⁇ f6/f ⁇ 0.50.
  • the relation specifies a ratio of the focal length f6 of the sixth lens L6 to the total focal length f Within the range of the relation, it is helpful to correct a field curvature of the system and improve the imaging quality.
  • the object side surface of the first lens L1 is convex at a paraxial position, and the image side surface thereof is concave at a paraxial position.
  • the focal length of the camera optical lens 10 is f
  • a focal length of the first lens L1 is defined as f1, which satisfy a following relation: 0.42 ⁇ f1/f ⁇ 1.43.
  • the relation specifies a ratio of the focal length f1 of the first lens L1 to the total focal length f.
  • the first lens L1 has a proper positive refractive power, which is beneficial to reduce an aberration of the system, and beneficial to the development of ultra-thinning and wide-angle lens. In an embodiment, 0.67 ⁇ f1/f ⁇ 1.15 is satisfied.
  • a curvature radius of the object side surface of the first lens L1 is defined as R1, and a curvature radius of the image side surface of the first lens L1 is defined as R2, which satisfy a following relation: ⁇ 3.99 ⁇ (R1+R2)/(R1 ⁇ R2) ⁇ 1.22.
  • the shape of the first lens L1 is reasonably controlled so that the first lens L1 can effectively correct a spherical aberration of the system. In an embodiment, ⁇ 2.49 ⁇ (R1+R2)/(R1 ⁇ R2) ⁇ 1.52 is satisfied.
  • An on-axis thickness of the first lens L1 is d1, and a total optical length of the camera optical lens 10 is defined as TTL, which satisfy a following relation: 0.05 ⁇ d1/TTL ⁇ 0.18. It is beneficial to realize ultra-thinning within the range of the conditional expression. In an embodiment, 0.08 ⁇ d1/TTL ⁇ 0.15 is satisfied.
  • the object side surface of the second lens L2 is convex at a paraxial position, and the image side surface thereof is concave at a paraxial position.
  • the focal length of the camera optical lens 10 is f
  • a focal length of the second lens L2 is defined as f2, which satisfy a following relation: ⁇ 7.06 ⁇ f2/f ⁇ 1.88.
  • Reasonable control of negative power of the second lens L2 is beneficial to correct the aberration of the optical system.
  • ⁇ 4.41 ⁇ f2/f ⁇ 2.35 is satisfied.
  • the total optical length of the camera optical lens 10 is TTL, and an on-axis thickness of the second lens L2 is defined as d3, which satisfy a following relation: 0.03 ⁇ d3/TTL ⁇ 0.09. It is beneficial to realize ultra-thin within the range of the conditional expression. In an embodiment, 0.05 ⁇ d3/TTL ⁇ 0.07 is satisfied.
  • the object side surface of the third lens L3 is convex at a paraxial position, and the image side surface thereof is convex at a paraxial position.
  • a curvature radius of the object side surface of the third lens L3 is defined as R5, and a curvature radius of the image side surface of the third lens L3 is defined as R6, which satisfy the following relation: ⁇ 0.35 ⁇ (R5+R6)/(R5 ⁇ R6) ⁇ 1.12.
  • the relationship defines the shape of the third lens L3, which is beneficial to the molding of the third lens L3 and avoids the poor molding and stress caused by the excessive curvature of the surface of the third lens L3. In an embodiment, ⁇ 0.22 ⁇ (R5+R6)/(R5 ⁇ R6) ⁇ 0.89 is satisfied.
  • the total optical length of the camera optical lens 10 is TTL, and an on-axis thickness of the third lens L3 is defined as d5, which satisfy a following relation: 0.03 ⁇ d5/TTL ⁇ 0.10. It is beneficial to realize ultra-thinning within the range of the conditional expression. In an embodiment, 0.05 ⁇ d5/TTL ⁇ 0.08 is satisfied.
  • the object side surface of the fourth lens L4 is concave at a paraxial position, and the image side surface thereof is concave at a paraxial position.
  • the focal length of the camera optical lens 10 is f
  • a focal length of the fourth lens L4 is defined as f4, which satisfy a following relation: ⁇ 1388.38 ⁇ f4/f ⁇ 2.21.
  • the relation specifies a ratio of the focal length f4 of the fourth lens L4 to the focal length f of the system, which makes the system have a better imaging quality and a lower sensitivity through reasonable distribution of the focal power. In an embodiment, ⁇ 867.74 ⁇ f4/f ⁇ 2.76 is satisfied.
  • a curvature radius of the object side surface of the fourth lens L4 is defined as R7
  • a curvature radius of the image side surface of the fourth lens L4 is defined as R8, and a following relation is satisfied: 0.42 ⁇ (R7+R8)/(R7 ⁇ R8) ⁇ 117.34.
  • This relation defines the shape of the fourth lens L4. Within the range, it is beneficial to correct an off-axis aberration with the development of ultra-thinning and wide angle. In an embodiment, 0.67 ⁇ (R7+R8)/(R7 ⁇ R8) ⁇ 93.87 is satisfied.
  • the total optical length of the camera optical lens 10 is TTL, and an on-axis thickness of the fourth lens L4 is defined as d7, which satisfy a following relation: 0.03 ⁇ d7/TTL ⁇ 0.10. It is beneficial to realize ultra-thinning within the range of the conditional expression. In an embodiment, 0.05 ⁇ d7/TTL ⁇ 0.08 is satisfied.
  • the object side surface of the fifth lens L5 is convex at a paraxial position, and the image side surface thereof is convex at a paraxial position.
  • the focal length of the camera optical lens 10 is f
  • a focal length of the fifth lens L5 is defined as f5, which satisfy a following relation: 0.56 ⁇ f5/f ⁇ 1.80.
  • the definition of the fifth lens L5 can effectively smooth a light angle of the camera lens and reduce the tolerance sensitivity. In an embodiment, 0.90 ⁇ f5/f ⁇ 1.44 is satisfied.
  • a curvature radius of the object side surface of the fifth lens L5 is defined as R9, and a curvature radius of the image side surface of the fifth lens L5 is R10, which satisfy a following relation: ⁇ 0.45 ⁇ (R9+R10)/(R9 ⁇ R10) ⁇ 0.14.
  • This relation defines the shape of the fifth lens L5, and within the range, it is beneficial to correct the off-axis aberration with the development of ultra-thinning and wide angle.
  • ⁇ 0.28 ⁇ (R9+R10)/(R9 ⁇ R10) ⁇ 0.17 is satisfied.
  • the total optical length of the camera optical lens 10 is TTL, and an on-axis thickness of the fifth lens L5 is defined as d9, which satisfy a following relation: 0.06 ⁇ d9/TTL ⁇ 0.21. It is beneficial to realize ultra-thinning within the range of the conditional expression. In an embodiment, 0.10 ⁇ d9/TTL ⁇ 0.17 is satisfied.
  • the object side surface of the sixth lens L6 is concave at a paraxial position, and the image side surface thereof is concave at a paraxial position.
  • a curvature radius of the object side surface of the sixth lens L6 is R11, and a curvature radius of the image side surface of the sixth lens L6 is R12, and a following relation is satisfied: ⁇ 1.76 ⁇ (R11+R12)/(R11 ⁇ R12) ⁇ 0.12.
  • This relationship defines the shape of the sixth lens L6, and within the range of condition, it is beneficial to correct the off-axis aberration with the development of ultra-thinning and wide angle.
  • ⁇ 1.10 ⁇ (R11+R12)/(R11 ⁇ R12) ⁇ 0.09 is satisfied.
  • the total optical length of the camera optical lens 10 is TTL, and an on-axis thickness of the sixth lens L6 is defined as d11, which satisfy a following relation: 0.04 ⁇ d11/TTL ⁇ 0.12. It is favorable for realizing ultra-thinning within the range of the conditional expression. In an embodiment, 0.06 ⁇ d11/TTL ⁇ 0.10 is satisfied.
  • an image height of the camera optical lens 10 is IH, and the total optical length of the camera optical lens 10 is TTL, which satisfy a following relation: TTL/IH ⁇ 1.17.
  • the relation is beneficial to realize ultra-thinning.
  • the field of view FOV of the camera optical lens 10 is greater than or equal to 86.00°, thus realizing a wide angle.
  • the F number FNO of the camera optical lens 10 is less than or equal to 2.25, thereby realizing a large aperture.
  • the focal length of the whole camera optical lens 10 is f
  • a combined focal length of the first lens L1 and the second lens L2 is f12, which satisfy a following relation: 0.54 ⁇ f12/f ⁇ 1.83.
  • the aberration and distortion of the camera optical lens 10 can be eliminated, the back focal length of the camera optical lens 10 can be suppressed, and the miniaturization of the image lens system can be maintained.
  • 0.87 ⁇ f12/f ⁇ 1.46 is satisfied.
  • the camera optical lens 10 has a good optical performance and can meet the design requirements for a large aperture, a wide angle and ultra-thinning.
  • the optical lens 10 is particularly suitable for mobile phone camera lens assemblies and WEB camera lenses composed of high-pixel CCDs, CMOSs and other camera g elements.
  • the symbols recorded in each example are as follows.
  • the units of focal length, on-axis distance, curvature radius, on-axis thickness, inflexion point position and arrest point position are mm.
  • TTL a total optical length (an on-axis distance from the object side surface of the first lens L1 to an image plane of the camera optical lens along an optic axis), in units of mm.
  • An F number FNO a ratio of an effective focal length of the camera optical lens to an entrance pupil diameter.
  • the object side surface and/or the image side surface of the lens can also be provided with inflexion points and/or arrest points to meet the requirements of high-quality imaging. Specific implementation solutions will be described as the follows.
  • Tables 1 and 2 show design data of the camera optical lens 10 according to the first embodiment of the present application.
  • R curvature radius at a center of the lens
  • R1 curvature radius of the object side surface of the first lens L1;
  • R2 curvature radius of the image side surface of the first lens L1;
  • R3 curvature radius of the object side surface of the second lens L2;
  • R4 curvature radius of the image side surface of the second lens L2;
  • R5 curvature radius of the object side surface of the third lens L3;
  • R6 curvature radius of the image side surface of the third lens L3;
  • R7 curvature radius of the object side surface of the fourth lens L4;
  • R8 curvature radius of the image side surface of the fourth lens L4;
  • R9 curvature radius of the object side surface of the fifth lens L5;
  • R10 curvature radius of the image side surface of the fifth lens L5;
  • R11 curvature radius of the object side surface of the sixth lens L6;
  • R12 curvature radius of the image side surface of the sixth lens L6;
  • R13 curvature radius of the object side surface of the optical filter GF
  • R14 curvature radius of the image side surface of the optical filter GF
  • d on-axis thickness of a lens and on-axis distance between lenses
  • d2 on-axis distance from the image side surface of the first lens L1 to the object side surface of the second lens L2;
  • nd refractive index of d line
  • nd1 refractive index of d line of the first lens L1;
  • nd2 refractive index of d line of the second lens L2;
  • nd3 refractive index of d line of the third lens L3;
  • nd4 refractive index of d line of the fourth lens L4;
  • nd5 refractive index of d line of the fifth lens L5;
  • nd6 refractive index of d line of the sixth lens L6;
  • ndg refractive index of d line of the optical filter GF
  • vg Abbe number of the optical filter GF.
  • Table 2 shows aspheric surface data of respective lenses in the camera optical lens 10 according to the first embodiment of the present application.
  • k is a conic coefficient
  • A4, A6, A8, A10, A12, A14, A16, A18 and A20 are aspheric coefficients.
  • x is a vertical distance between a point on the aspheric curve and the optical axis
  • y is an aspheric depth (a vertical distance between the point having a distance of x from the optical axis on the aspheric surface, and a tangent plane to the vertex on the aspheric optical axis).
  • the aspheric surface of each lens surface uses the aspheric surface shown in the above formula (1).
  • the present application is not limited to the aspheric polynomial form expressed by the formula (1).
  • Table 3 and Table 4 show design data of inflexion points and arrest points of respective lenses in the camera optical lens 10 according to the first embodiment of the present application.
  • P1R1 and P1R2 represent the object side surface and the image side surface of the first lens L1 respectively
  • P2R1 and P2R2 represent the object side surface and the image side surface of the second lens L2 respectively
  • P3R1 and P3R2 represent the object side surface and the image side surface of the third lens L3 respectively
  • P4R1 and P4R2 represent the object side surface and the image side surface of the fourth lens L4 respectively
  • P5R1 and P5R2 represent the object side surface and the image side surface of the fifth lens L5 respectively
  • P6R1 and P6R2 represent the object side surface and the image side surface of the sixth lens L6 respectively.
  • the data in the column named “inflexion point position” is vertical distances from inflexion points set on respective lens surfaces to the optical axis of the camera optical lens 10 .
  • the data in the column named “arrest point position” is vertical distances from arrest points set on respective lens surfaces to the optical axis of the camera optical lens 10 .
  • FIG. 2 and FIG. 3 respectively show a longitudinal aberration and a lateral color of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing through the camera optical lens 10 of the first embodiment.
  • FIG. 4 is a schematic diagram showing a field curvature and a distortion of light with a wavelength of 555 nm after passing through the camera optical lens 10 of the first embodiment.
  • a field curvature S in FIG. 4 is a field curvature in the sagittal direction and T is a field curvature in a tangential direction.
  • Table 17 shows values corresponding to the parameters specified in the conditional expressions for various numerical values in the first, second, third and fourth embodiment.
  • the camera optical lens in the first embodiment satisfies each conditional expression.
  • an entrance pupil diameter ENPD of the camera optical lens 10 is 1.297 mm, the full field image height IH is 2.920 mm, and the field of view FOV in a diagonal direction is 87.95°.
  • the camera optical lens 10 meets the design requirements for large aperture, wide angle and ultra-thinning, its on-axis and off-axis aberrations are fully corrected, and it has excellent optical characteristics.
  • the second embodiment is basically the same as the first embodiment, and involves symbols having the same meanings as the first embodiment. Only differences therebetween will be listed below.
  • the object side surface of the fourth lens L4 is convex at a paraxial position.
  • Table 5 and Table 6 show design data of the camera optical lens 20 according to the second embodiment of the present application.
  • Table 6 shows aspheric surface data of respective lenses in the camera optical lens 20 according to the second embodiment of the present application.
  • Table 7 and Table 8 show design data of inflexion points and arrest points of respective lenses in the camera optical lens 20 according to the second embodiment of the present application.
  • Arrest point arrest points position 1 position 2 P1R1 0 / / P1R2 1 0.595 / P2R1 0 / / P2R2 0 / / P3R1 1 0.225 / P3R2 0 / / P4R1 1 0.035 / P4R2 1 0.215 / P5R1 1 0.615 / P5R2 0 / / P6R1 2 2.015 2.065 P6R2 1 0.455 /
  • FIG. 6 and FIG. 7 respectively show a longitudinal aberration and a lateral color of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing through the camera optical lens 20 of the second embodiment.
  • FIG. 8 shows a schematic diagram of a field curvature and a distortion of light with a wavelength of 555 nm after passing through the camera optical lens 20 of the second embodiment.
  • the camera optical lens in the second embodiment satisfies each conditional expression.
  • the entrance pupil diameter ENPD of the camera optical lens 20 is 1.296 mm
  • the full field image height IH is 2.920 mm
  • the field of view FOV in a diagonal direction is 87.53°.
  • the camera optical lens 20 meets the design requirements for large aperture, wide angle and ultra-thinning, its on-axis and off-axis aberrations are fully corrected, and it has excellent optical characteristics.
  • the third embodiment is basically the same as the first embodiment, and involves the symbols having the same meanings as the first embodiment. Only differences therebetween will be listed below.
  • the object side surface of the fourth lens L4 is convex at a paraxial position.
  • Table 9 and Table 10 show design data of the camera optical lens 30 according to the third embodiment of the present application.
  • Table 10 shows aspheric surface data of respective lenses in the camera optical lens 30 according to the third embodiment of the present application.
  • Table 11 and Table 12 show design data of inflexion points and arrest points of respective lenses in the camera optical lens 30 according to the third embodiment of the present application.
  • FIG. 10 and FIG. 11 respectively show a longitudinal aberration and a lateral color of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing through the camera optical lens 30 of the third embodiment.
  • FIG. 12 shows a schematic diagram of a field curvature and a distortion of light with a wavelength of 555 nm after passing through the camera optical lens 30 of the third embodiment.
  • Table 17 lists the values corresponding to respective conditional expressions in this embodiment according to the above conditional expressions. Obviously, the camera optical system of this embodiment satisfies the above conditional expressions.
  • the entrance pupil diameter ENPD of the camera optical lens 30 is 1.289 mm
  • the full field image height IH is 2.920 mm
  • the field of view FOV in a diagonal direction is 87.75°.
  • the camera optical lens 30 meets the design requirements for large aperture, wide angle and ultra-thinning, its on-axis and off-axis aberrations are fully corrected, and it has excellent optical characteristics.
  • the fourth embodiment is basically the same as the first embodiment, and involves the symbols having the same meanings as the first embodiment. Only differences therebetween will be listed below.
  • the object side surface of the fourth lens L4 is convex at a paraxial position.
  • Table 13 and Table 14 show design data of the camera optical lens 40 according to the fourth embodiment of the present application.
  • Table 14 shows aspheric surface data of respective lenses in the camera optical lens 40 according to the fourth embodiment of the present application.
  • Tables 15 and 16 show design data of inflexion points and arrest points of respective lenses in the camera optical lens 40 according to the fourth embodiment of the present application.
  • Arrest point arrest points position 1 position 2 P1R1 0 / / P1R2 1 0.595 / P2R1 0 / / P2R2 0 / / P3R1 1 0.225 / P3R2 0 / / P4R1 1 0.035 / P4R2 1 0.255 / P5R1 1 0.515 / P5R2 0 / / P6R1 2 2.015 2.135 P6R2 1 0.445 /
  • FIG. 14 and FIG. 15 respectively show a longitudinal aberration and a lateral color of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing through the camera optical lens 40 according to the fourth embodiment.
  • FIG. 16 shows a schematic diagram of a field curvature and a distortion of light with a wavelength of 555 nm after passing through the camera optical lens 40 of the fourth embodiment.
  • Table 17 lists values corresponding to respective conditional expressions in this embodiment according to the above conditional expressions. Obviously, the camera optical system of this embodiment satisfies the above conditional expressions.
  • the entrance pupil diameter ENPD of the camera optical lens 40 is 1.289 mm
  • the full field image height IH is 2.920 mm
  • the field of view FOV in the diagonal direction is 87.94°.
  • the camera optical lens 40 meets the design requirements for large aperture, wide angle and ultra-thinning, its on-axis and off-axis aberrations are fully corrected, and it has excellent optical characteristics.

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Abstract

A camera optical lens includes a first lens to a sixth lens. The camera optical lens satisfies: 6.50≤f3/f≤10.00; 1.50≤(R3+R4)/(R3−R4)≤3.00; 8.00≤d1/d2≤10.50; 1.50≤d8/d7≤2.00, where f denotes a focal length of the camera optical lens, f3 denotes a focal length of a third lens, R3 and R4 respectively denotes curvature radiuses of an object side surface and an image side surface of a second lens, d1 denotes an on-axis thickness of the first lens, d2 denotes an on-axis distance from an image side surface of the first lens to an object side surface of the second lens, d7 denotes an on-axis thickness of a fourth lens, and d8 denotes an on-axis distance from an image side surface of the fourth lens to an object side surface of a fifth lens. The camera optical lens has a good optical performance and meets the design requirements for a large aperture, a wide angle and ultra-thinning.

Description

    TECHNICAL FIELD
  • The present application relates to the field of optical lenses, and more particularly, to a camera optical lens suitable for portable terminal equipment such as smart phones and digital cameras, and camera devices such as monitors and PC lenses.
    • BACKGROUND
  • In recent years, with the emergence of smart phones, the demand for miniaturized photographic lenses is increasing day by day, and the photosensitive device of a general photographic lens is nothing more than a Charge Coupled Device (CCD) or a Complementary Metal-oxide Semiconductor Sensor (CMOS Sensor). Moreover, due to the improvement of semiconductor manufacturing technology, the pixel size of the photosensitive devices is reduced. In addition, the development trend of today's electronic products is having good functions with a thin and short appearance. Therefore, miniaturized camera lenses with a good imaging quality have become the mainstream in the current market.
  • In order to obtain a better imaging quality, traditional lenses mounted on mobile phone cameras mostly adopt a three-piece or four-piece lens structure. In addition, with the development of technology and the increase of diversified needs of users, with the pixel area of photosensitive devices shrinking and the system's requirements for imaging quality increasing, five-piece and six-piece lens structures gradually appear in lens designs. Although the common six-piece lenses have a good optical performance, their optical power, lens spacing and lens shape settings are still unreasonable, which leads to result that the lens structure having a good optical performance fails to meet the design requirements for a large aperture, ultra-thinning and a wide angle.
    • SUMMARY
  • In view of the above problems, it is an object of the present application to provide a camera optical lens which has a good optical performance and meanwhile meets the design requirements for a large aperture, ultra-thinning and a wide angle.
  • To solve the above technical problems, a camera optical lens is provided according to an embodiment of the present application. The camera optical lens includes from an object side to an image side: a first lens having positive refractive power, a second lens having negative refractive power, a third lens having positive refractive power, a fourth lens having negative refractive power, a fifth lens having positive refractive power and a sixth lens having negative refractive power, wherein the camera optical lens satisfies:

  • 6.50≤f3/f≤10.00;

  • 1.50≤(R3+R4)/(R3−R4)≤3.00;

  • 8.00≤d1/d2≤10.50; and

  • 1.50≤d8/d7≤2.00,
  • where f denotes a focal length of the camera optical lens,
  • f3 denotes a focal length of the third lens,
  • R3 denotes a curvature radius of an object side surface of the second lens,
  • R4 denotes a curvature radius of an image side surface of the second lens,
  • d1 denotes an on-axis thickness of the first lens,
  • d2 denotes an on-axis distance from an image side surface of the first lens to the object side surface of the second lens,
  • d7 denotes an on-axis thickness of the fourth lens, and
  • d8 denotes an on-axis distance from an image side surface of the fourth lens to an object side surface of the fifth lens.
  • As an improvement, the camera optical lens satisfies: −1.00≤f6/f≤−0.50, where f6 denotes a focal length of the sixth lens.
  • As an improvement, the camera optical lens satisfies:

  • 0.42≤f1/f≤1.43;

  • −3.99≤(R1+R2)/(R1−R2)≤−1.22; and

  • 0.05≤d1/TTL≤0.18,
  • where f1 denotes a focal length of the first lens,
  • R1 denotes a curvature radius of an object side surface of the first lens,
  • R2 denotes a curvature radius of the image side surface of the first lens, and
  • TTL denotes a total optical length from the object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
  • As an improvement, the camera optical lens satisfies:

  • −7.06≤f2/f≤−1.88; and

  • 0.03≤d3/TTL≤0.09,
  • where f2 denotes a focal length of the second lens,
  • d3 denotes an on-axis thickness of the second lens, and
  • TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
  • As an improvement, the camera optical lens satisfies:

  • −0.35≤(R5+R6)/(R5−R6)≤1.12; and

  • 0.03≤d5/TTL≤0.10,
  • where R5 denotes a curvature radius of an object side surface of the third lens,
  • R6 denotes a curvature radius of an image side surface of the third lens,
  • d5 denotes an on-axis thickness of the third lens, and
  • TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
  • As an improvement, the camera optical lens satisfies:

  • −1388.38≤f4/f≤−2.21;

  • 0.42≤(R7+R8)/(R7−R8)≤117.34; and

  • 0.03≤d7/TTL≤0.10,
  • where f4 denotes a focal length of the fourth lens,
  • R7 denotes a curvature radius of an object side surface of the fourth lens,
  • R8 denotes a curvature radius of the image side surface of the fourth lens, and
  • TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
  • As an improvement, the camera optical lens satisfies:

  • 0.56≤f5/f≤1.80;

  • −0.45≤(R9+R10)/(R9−R10)≤−0.14; and

  • 0.06≤d9/TTL≤0.21,
  • where f5 denotes a focal length of the fifth lens,
  • R9 denotes a curvature radius of the object side surface of the fifth lens,
  • R10 denotes a curvature radius of an image side surface of the fifth lens,
  • d9 denotes an on-axis thickness of the fifth lens, and
  • TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
  • As an improvement, the camera optical lens satisfies:

  • −1.76≤(R11+R12)/(R11−R12)≤0.12; and

  • 0.04≤d11/TTL≤0.12,
  • where R11 denotes a curvature radius of an object side surface of the sixth lens,
  • R12 denotes a curvature radius of an image side surface of the sixth lens,
  • d11 denotes an on-axis thickness of the sixth lens, and
  • TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
  • As an improvement, the camera optical lens satisfies: TTL/IH≤1.17, where IH denotes an image height of the camera optical lens, and TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
  • As an improvement, a field of view of the camera optical lens is FOV, and the camera optical lens satisfies: FOV≥86.00°, where FOV denotes a field of view of the camera optical lens.
  • The camera optical lens has the following beneficial effects: the camera optical lens has excellent optical characteristics, has the characteristics of large aperture, wide angle and ultra-thinning, and is especially suitable for mobile phone camera lens assemblies and WEB camera lenses composed of camera elements such as high-pixel CCDs and CMOSs.
    • BRIEF DESCRIPTION OF DRAWINGS
  • In order to explain the technical solution in the embodiments of the present application more clearly, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained according to these drawings for a person skilled in the art without paying creative work. In the drawing:
  • FIG. 1 is a schematic structural diagram of a camera optical lens according to a first embodiment of the present application;
  • FIG. 2 is a schematic diagram of an longitudinal aberration of the camera optical lens shown in FIG. 1;
  • FIG. 3 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 1;
  • FIG. 4 is schematic diagrams of a field curvature and a distortion of the camera optical lens shown in FIG. 1;
  • FIG. 5 is a schematic structural diagram of a camera optical lens according to a second embodiment of the present application;
  • FIG. 6 is a schematic diagram of an longitudinal aberration of the camera optical lens shown in FIG. 5;
  • FIG. 7 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 5;
  • FIG. 8 is schematic diagrams of a field curvature and a distortion of the camera optical lens shown in FIG. 5;
  • FIG. 9 is a schematic structural diagram of a camera optical lens according to a third embodiment of the present application;
  • FIG. 10 is a schematic diagram of an longitudinal aberration of the camera optical lens shown in FIG. 9;
  • FIG. 11 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 9;
  • FIG. 12 is schematic diagrams of a field curvature and a distortion of the camera optical lens shown in FIG. 9;
  • FIG. 13 is a schematic structural diagram of a camera optical lens according to a fourth embodiment of the present application;
  • FIG. 14 is a schematic diagram of an longitudinal aberration of the camera optical lens shown in FIG. 13;
  • FIG. 15 is a schematic diagram of a lateral color of the camera optical lens shown in FIG. 13;
  • FIG. 16 is schematic diagrams of a field curvature and a distortion of the camera optical lens shown in FIG. 13.
    •  DESCRIPTION OF EMBODIMENTS
  • In order to make the object, technical solution and advantages of the present application clearer, each embodiment of the present application will be described in detail with reference to the accompanying drawings. However, it could be understood by those having ordinary skill in the art that in various embodiments of the present application, many technical details are put forward in order to make readers better understand the present application. However, the technical solution claimed by the present application can be realized even without these technical details or various changes or modifications based on the following embodiments.
    • First Embodiment
  • Referring to the drawings, the present application provides a camera optical lens 10. FIG. 1 shows a camera optical lens 10 according to a first embodiment of the present application. Specifically, the camera optical lens 10 includes six lenses, which include an aperture S1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6 in sequence from the object side to the image side. Optical elements such as an optical filter GF may be disposed between the sixth lens L6 and an image plane Si.
  • In this embodiment, the first lens L1 has positive refractive power, the second lens L2 has negative refractive power, the third lens L3 has positive refractive power, the fourth lens L4 has negative refractive power, the fifth lens L5 has positive refractive power, and the sixth lens L6 has negative refractive power.
  • In this embodiment, the first lens L1 is made of plastic, the second lens L2 is made of plastic, the third lens L3 is made of plastic, the fourth lens L4 is made of plastic, the fifth lens L5 is made of plastic, and the sixth lens L6 is made of plastic.
  • In this embodiment, a focal length of the camera optical lens 10 is defined as f, and a focal length of the third lens L3 is defined as f3, which satisfy a following relation: 6.50≤f3/f≤10.00. The relation specifies a ratio of the focal length of the third lens to the total focal length, which is helpful to aberration correction and improve imaging quality within the range of the condition.
  • A curvature radius of an object side surface of the second lens L2 is defined as R3, and a curvature radius of an image side surface of the second lens L2 is defined as R4, which satisfy a following relation: 1.50≤(R3+R4)/(R3−R4)≤3.00. The relation specifies the shape of the second lens L2, and the sensitivity of the second lens meeting the condition is low, which is beneficial to improve the production yield.
  • An on-axis thickness of the first lens L1 is defined as d1, and an on-axis distance from an image side surface of the first lens L1 to an object side surface of the second lens L2 is defined as d2, which satisfy a following relation: 8.00≤d1/d2≤10.50. Within the range of the relation, expression, it is beneficial to lens processing and lens assembly.
  • An on-axis thickness of the fourth lens L4 is defined as d7, and an on-axis distance from an image side surface of the fourth lens L4 to an object side surface of the fifth lens L5 is d8, which satisfy a following relation: 1.50≤d8/d7≤2.00. Within the range of the relation, it is helpful to compress the length of the system and realize ultra-thinning.
  • The focal length of the camera optical lens 10 is f, and a focal length of the sixth lens L6 is defined as f6, which satisfy a following relation: −1.00≤f6/f≤−0.50. The relation specifies a ratio of the focal length f6 of the sixth lens L6 to the total focal length f Within the range of the relation, it is helpful to correct a field curvature of the system and improve the imaging quality.
  • In this embodiment, the object side surface of the first lens L1 is convex at a paraxial position, and the image side surface thereof is concave at a paraxial position.
  • The focal length of the camera optical lens 10 is f, and a focal length of the first lens L1 is defined as f1, which satisfy a following relation: 0.42≤f1/f≤1.43. The relation specifies a ratio of the focal length f1 of the first lens L1 to the total focal length f. Within the specified range, the first lens L1 has a proper positive refractive power, which is beneficial to reduce an aberration of the system, and beneficial to the development of ultra-thinning and wide-angle lens. In an embodiment, 0.67≤f1/f≤1.15 is satisfied.
  • A curvature radius of the object side surface of the first lens L1 is defined as R1, and a curvature radius of the image side surface of the first lens L1 is defined as R2, which satisfy a following relation: −3.99≤(R1+R2)/(R1−R2)≤−1.22. The shape of the first lens L1 is reasonably controlled so that the first lens L1 can effectively correct a spherical aberration of the system. In an embodiment, −2.49≤(R1+R2)/(R1−R2)≤−1.52 is satisfied.
  • An on-axis thickness of the first lens L1 is d1, and a total optical length of the camera optical lens 10 is defined as TTL, which satisfy a following relation: 0.05≤d1/TTL≤0.18. It is beneficial to realize ultra-thinning within the range of the conditional expression. In an embodiment, 0.08≤d1/TTL≤0.15 is satisfied.
  • In this embodiment, the object side surface of the second lens L2 is convex at a paraxial position, and the image side surface thereof is concave at a paraxial position.
  • The focal length of the camera optical lens 10 is f, and a focal length of the second lens L2 is defined as f2, which satisfy a following relation: −7.06≤f2/f≤−1.88. Reasonable control of negative power of the second lens L2 is beneficial to correct the aberration of the optical system. In an embodiment, −4.41≤f2/f≤−2.35 is satisfied.
  • The total optical length of the camera optical lens 10 is TTL, and an on-axis thickness of the second lens L2 is defined as d3, which satisfy a following relation: 0.03≤d3/TTL≤0.09. It is beneficial to realize ultra-thin within the range of the conditional expression. In an embodiment, 0.05≤d3/TTL≤0.07 is satisfied.
  • In this embodiment, the object side surface of the third lens L3 is convex at a paraxial position, and the image side surface thereof is convex at a paraxial position.
  • A curvature radius of the object side surface of the third lens L3 is defined as R5, and a curvature radius of the image side surface of the third lens L3 is defined as R6, which satisfy the following relation: −0.35≤(R5+R6)/(R5−R6)≤1.12. The relationship defines the shape of the third lens L3, which is beneficial to the molding of the third lens L3 and avoids the poor molding and stress caused by the excessive curvature of the surface of the third lens L3. In an embodiment, −0.22≤(R5+R6)/(R5−R6)≤0.89 is satisfied.
  • The total optical length of the camera optical lens 10 is TTL, and an on-axis thickness of the third lens L3 is defined as d5, which satisfy a following relation: 0.03≤d5/TTL≤0.10. It is beneficial to realize ultra-thinning within the range of the conditional expression. In an embodiment, 0.05≤d5/TTL≤0.08 is satisfied.
  • In this embodiment, the object side surface of the fourth lens L4 is concave at a paraxial position, and the image side surface thereof is concave at a paraxial position.
  • The focal length of the camera optical lens 10 is f, and a focal length of the fourth lens L4 is defined as f4, which satisfy a following relation: −1388.38≤f4/f≤−2.21. The relation specifies a ratio of the focal length f4 of the fourth lens L4 to the focal length f of the system, which makes the system have a better imaging quality and a lower sensitivity through reasonable distribution of the focal power. In an embodiment, −867.74≤f4/f≤−2.76 is satisfied.
  • A curvature radius of the object side surface of the fourth lens L4 is defined as R7, a curvature radius of the image side surface of the fourth lens L4 is defined as R8, and a following relation is satisfied: 0.42≤(R7+R8)/(R7−R8)≤117.34. This relation defines the shape of the fourth lens L4. Within the range, it is beneficial to correct an off-axis aberration with the development of ultra-thinning and wide angle. In an embodiment, 0.67≤(R7+R8)/(R7−R8)≤93.87 is satisfied.
  • The total optical length of the camera optical lens 10 is TTL, and an on-axis thickness of the fourth lens L4 is defined as d7, which satisfy a following relation: 0.03≤d7/TTL≤0.10. It is beneficial to realize ultra-thinning within the range of the conditional expression. In an embodiment, 0.05≤d7/TTL≤0.08 is satisfied.
  • In this embodiment, the object side surface of the fifth lens L5 is convex at a paraxial position, and the image side surface thereof is convex at a paraxial position.
  • The focal length of the camera optical lens 10 is f, and a focal length of the fifth lens L5 is defined as f5, which satisfy a following relation: 0.56≤f5/f≤1.80. The definition of the fifth lens L5 can effectively smooth a light angle of the camera lens and reduce the tolerance sensitivity. In an embodiment, 0.90≤f5/f≤1.44 is satisfied.
  • A curvature radius of the object side surface of the fifth lens L5 is defined as R9, and a curvature radius of the image side surface of the fifth lens L5 is R10, which satisfy a following relation: −0.45≤(R9+R10)/(R9−R10)≤−0.14. This relation defines the shape of the fifth lens L5, and within the range, it is beneficial to correct the off-axis aberration with the development of ultra-thinning and wide angle. In an embodiment, −0.28≤(R9+R10)/(R9−R10)≤−0.17 is satisfied.
  • The total optical length of the camera optical lens 10 is TTL, and an on-axis thickness of the fifth lens L5 is defined as d9, which satisfy a following relation: 0.06≤d9/TTL≤0.21. It is beneficial to realize ultra-thinning within the range of the conditional expression. In an embodiment, 0.10≤d9/TTL≤0.17 is satisfied.
  • In this embodiment, the object side surface of the sixth lens L6 is concave at a paraxial position, and the image side surface thereof is concave at a paraxial position.
  • A curvature radius of the object side surface of the sixth lens L6 is R11, and a curvature radius of the image side surface of the sixth lens L6 is R12, and a following relation is satisfied: −1.76≤(R11+R12)/(R11−R12)≤0.12. This relationship defines the shape of the sixth lens L6, and within the range of condition, it is beneficial to correct the off-axis aberration with the development of ultra-thinning and wide angle. In an embodiment, −1.10≤(R11+R12)/(R11−R12)≤0.09 is satisfied.
  • The total optical length of the camera optical lens 10 is TTL, and an on-axis thickness of the sixth lens L6 is defined as d11, which satisfy a following relation: 0.04≤d11/TTL≤0.12. It is favorable for realizing ultra-thinning within the range of the conditional expression. In an embodiment, 0.06≤d11/TTL≤0.10 is satisfied.
  • In this embodiment, an image height of the camera optical lens 10 is IH, and the total optical length of the camera optical lens 10 is TTL, which satisfy a following relation: TTL/IH≤1.17. The relation is beneficial to realize ultra-thinning.
  • In this embodiment, the field of view FOV of the camera optical lens 10 is greater than or equal to 86.00°, thus realizing a wide angle.
  • In this embodiment, the F number FNO of the camera optical lens 10 is less than or equal to 2.25, thereby realizing a large aperture.
  • In this embodiment, the focal length of the whole camera optical lens 10 is f, and a combined focal length of the first lens L1 and the second lens L2 is f12, which satisfy a following relation: 0.54≤f12/f≤1.83. Within the range of the conditional expression, the aberration and distortion of the camera optical lens 10 can be eliminated, the back focal length of the camera optical lens 10 can be suppressed, and the miniaturization of the image lens system can be maintained. In an embodiment, 0.87≤f12/f≤1.46 is satisfied.
  • When the above relationship is met, the camera optical lens 10 has a good optical performance and can meet the design requirements for a large aperture, a wide angle and ultra-thinning. According to the characteristics of the optical lens 10, the optical lens 10 is particularly suitable for mobile phone camera lens assemblies and WEB camera lenses composed of high-pixel CCDs, CMOSs and other camera g elements.
  • Next, the camera optical lens 10 according to the present application will be described by way of examples. The symbols recorded in each example are as follows. The units of focal length, on-axis distance, curvature radius, on-axis thickness, inflexion point position and arrest point position are mm.
  • TTL: a total optical length (an on-axis distance from the object side surface of the first lens L1 to an image plane of the camera optical lens along an optic axis), in units of mm. An F number FNO: a ratio of an effective focal length of the camera optical lens to an entrance pupil diameter.
  • In an embodiment, the object side surface and/or the image side surface of the lens can also be provided with inflexion points and/or arrest points to meet the requirements of high-quality imaging. Specific implementation solutions will be described as the follows.
  • Tables 1 and 2 show design data of the camera optical lens 10 according to the first embodiment of the present application.
  • TABLE 1
    R d nd vd
    S1 ∞ d0= −0.225
    R1 0.996 d1= 0.405 nd1 1.5440 v1 56.08
    R2 3.417 d2= 0.040
    R3 16.863 d3= 0.191 nd2 1.6913 v2 19.24
    R4 4.262 d4= 0.146
    R5 25.842 d5= 0.213 nd3 1.6173 v3 26.22
    R6 −36.813 d6= 0.178
    R7 −114.120 d7= 0.191 nd4 1.6497 v4 21.45
    R8 9.730 d8= 0.341
    R9 2.908 d9= 0.459 nd5 1.5440 v5 56.06
    R10 −4.424 d10= 0.408
    R11 −1.113 d11= 0.268 nd6 1.5352 v6 56.11
    R12 17.240 d12= 0.100
    R13 ∞ d13= 0.110 ndg 1.5168 vg 64.17
    R14 ∞ d14= 0.250
  • The meaning of each symbol in Table 1 is as follows.
  • S1: aperture;
  • R: curvature radius at a center of the lens;
  • R1: curvature radius of the object side surface of the first lens L1;
  • R2: curvature radius of the image side surface of the first lens L1;
  • R3: curvature radius of the object side surface of the second lens L2;
  • R4: curvature radius of the image side surface of the second lens L2;
  • R5: curvature radius of the object side surface of the third lens L3;
  • R6: curvature radius of the image side surface of the third lens L3;
  • R7: curvature radius of the object side surface of the fourth lens L4;
  • R8: curvature radius of the image side surface of the fourth lens L4;
  • R9: curvature radius of the object side surface of the fifth lens L5;
  • R10: curvature radius of the image side surface of the fifth lens L5;
  • R11: curvature radius of the object side surface of the sixth lens L6;
  • R12: curvature radius of the image side surface of the sixth lens L6;
  • R13: curvature radius of the object side surface of the optical filter GF;
  • R14: curvature radius of the image side surface of the optical filter GF;
  • d: on-axis thickness of a lens and on-axis distance between lenses;
  • d0: on-axis distance from the aperture S1 to the object side surface of the first lens L1;
  • d1: on-axis thickness of the first lens L1;
  • d2: on-axis distance from the image side surface of the first lens L1 to the object side surface of the second lens L2;
  • d3: on-axis thickness of the second lens L2;
  • d4: on-axis distance from the image side surface of the second lens L2 to the object side surface of the third lens L3;
  • d5: on-axis thickness of the third lens L3;
  • d6: on-axis distance from the image side surface of the third lens L3 to the object side surface of the fourth lens L4;
  • d7: on-axis thickness of the fourth lens L4;
  • d8: on-axis distance from the image side surface of the fourth lens L4 to the object side surface of the fifth lens L5;
  • d9: on-axis thickness of the fifth lens L5;
  • d10: on-axis distance from the image side surface of the fifth lens L5 to the object side surface of the sixth lens L6;
  • d11: on-axis thickness of the sixth lens L6;
  • d12: on-axis distance from the image side surface of the sixth lens L6 to the object side surface of the optical filter GF;
  • d13: on-axis thickness of the optical filter GF;
  • d14: on-axis distance from the image side surface of the optical filter GF to the image plane;
  • nd: refractive index of d line;
  • nd1: refractive index of d line of the first lens L1;
  • nd2: refractive index of d line of the second lens L2;
  • nd3: refractive index of d line of the third lens L3;
  • nd4: refractive index of d line of the fourth lens L4;
  • nd5: refractive index of d line of the fifth lens L5;
  • nd6: refractive index of d line of the sixth lens L6;
  • ndg: refractive index of d line of the optical filter GF;
  • vd: Abbe number;
  • v1: Abbe number of the first lens L1;
  • v2: Abbe number of the second lens L2;
  • v3: Abbe number of the third lens L3;
  • v4: Abbe number of the fourth lens L4;
  • v5: Abbe number of the fifth lens L5;
  • v6: Abbe number of the sixth lens L6;
  • vg: Abbe number of the optical filter GF.
  • Table 2 shows aspheric surface data of respective lenses in the camera optical lens 10 according to the first embodiment of the present application.
  • TABLE 2
    Conic coefficient Aspheric coefficient
    k A4 A6 A8 A10 A12
    R1 −1.0998E+00  1.2354E−01 3.1939E−01 −3.4068E+00 2.4752E+01 −1.1213E+02
    R2  4.5589E+00 −2.4150E−01 −1.0374E−01  −9.7797E−01 1.9499E+01 −1.1991E+02
    R3  2.3082E+02 −1.2007E−01 −9.0756E−03   5.7407E+00 −4.3020E+01   2.1404E+02
    R4 −5.7424E+01  1.4012E−01 2.1189E+00 −3.1830E+01 3.5879E+02 −2.4720E+03
    R5  1.1760E+03 −2.9968E−01 2.2568E+00 −3.4078E+01 3.1923E+02 −1.9796E+03
    R6 −3.7431E+02 −3.4925E−01 9.4147E−01 −1.6429E+00 −4.4756E+01   4.1879E+02
    R7  2.1090E+04 −8.3112E−01 1.8439E+00 −1.7334E+00 −3.7313E+01   2.5942E+02
    R8 −1.4102E+03 −6.6545E−01 1.6219E+00 −4.7681E+00 1.1012E+01 −1.7648E+01
    R9 −2.0693E+01 −3.3799E−01 5.8184E−01 −1.4067E+00 2.2865E+00 −2.5439E+00
    R10  5.7180E+00  3.7421E−01 4.6146E−01 −8.1501E−01 1.5615E+00 −1.8803E+00
    R11 −1.7126E+00 −1.2033E+00 2.4928E+00 −2.5765E+00 1.6614E+00 −7.0016E−01
    R12 −1.8969E+03  6.8119E−01 1.2864E+00 −1.3307E+00 8.7524E−01 −3.8489E−01
    Conic coefficient Aspheric coefficient
    k A14 A16 A18 A20
    R1 −1.0998E+00 3.0875E+02 −5.0686E+02 4.3701E+02 −1.4857E+02
    R2  4.5589E+00 3.8019E+02 −6.3735E+02 5.1539E+02 −1.5725E+02
    R3  2.3082E+02 −6.9286E+02   1.4005E+03 −1.5217E+03   6.3181E+02
    R4 −5.7424E+01 1.0560E+04 −2.7256E+04 3.8950E+04 −2.3525E+04
    R5  1.1760E+03 7.8336E+03 −1.8919E+04 2.5144E+04 −1.3809E+04
    R6 −3.7431E+02 −1.8582E+03   4.6044E+03 −6.1438E+03   3.4785E+03
    R7  2.1090E+04 −8.7827E+02   1.6785E+03 −1.7435E+03   7.6206E+02
    R8 −1.4102E+03 1.9227E+01 −1.3205E+01 4.9714E+00 −7.6713E−01
    R9 −2.0693E+01 1.8062E+00 −7.5235E−01 1.6608E−01 −1.4969E−02
    R10  5.7180E+00 1.3162E+00 −5.2602E−01 1.1153E−01 −9.7342E−03
    R11 −1.7126E+00 1.9300E−01 −3.3613E−02 3.3658E−03 −1.4809E−04
    R12 −1.8969E+03 1.1246E−01 −2.0897E−02 2.2263E−03 −1.0306E−04
  • In Table 2, k is a conic coefficient, and A4, A6, A8, A10, A12, A14, A16, A18 and A20 are aspheric coefficients.

  • y=(x 2 /R)/{1+[1−(k+1)(x 2 /R 2)]1/2 }+A4x 4 +A6x 6 +A8x 8 +A10x 10 +A12x 12 +A14x 14 +A16x 16 +A18x 18 +A20x 20  (1)
  • In the above formula, x is a vertical distance between a point on the aspheric curve and the optical axis, and y is an aspheric depth (a vertical distance between the point having a distance of x from the optical axis on the aspheric surface, and a tangent plane to the vertex on the aspheric optical axis).
  • For convenience, the aspheric surface of each lens surface uses the aspheric surface shown in the above formula (1). However, the present application is not limited to the aspheric polynomial form expressed by the formula (1).
  • Table 3 and Table 4 show design data of inflexion points and arrest points of respective lenses in the camera optical lens 10 according to the first embodiment of the present application. P1R1 and P1R2 represent the object side surface and the image side surface of the first lens L1 respectively, P2R1 and P2R2 represent the object side surface and the image side surface of the second lens L2 respectively, P3R1 and P3R2 represent the object side surface and the image side surface of the third lens L3 respectively, P4R1 and P4R2 represent the object side surface and the image side surface of the fourth lens L4 respectively, P5R1 and P5R2 represent the object side surface and the image side surface of the fifth lens L5 respectively, and P6R1 and P6R2 represent the object side surface and the image side surface of the sixth lens L6 respectively. The data in the column named “inflexion point position” is vertical distances from inflexion points set on respective lens surfaces to the optical axis of the camera optical lens 10. The data in the column named “arrest point position” is vertical distances from arrest points set on respective lens surfaces to the optical axis of the camera optical lens 10.
  • TABLE 3
    Number of Inflexion Inflexion Inflexion Inflexion Inflexion
    inflexion point point point point point
    points position
    1 position 2 position 3 position 4 position 5
    P1R1 1 0.635 / / / /
    P1R2
    1 0.325 / / / /
    P2R1
    0 / / / / /
    P2R2
    0 / / / / /
    P3R1 2 0.125 0.575 / / /
    P3R2
    1 0.645 / / / /
    P4R1
    0 / / / / /
    P4R2
    1 0.105 / / / /
    P5R1 2 0.295 1.145 / / /
    P5R2
    1 1.165 / / / /
    P6R1 2 0.755 1.905 / / /
    P6R2 5 0.085 0.795 0.975 1.925 2.085
  • TABLE 4
    Number of arrest points Arrest point position 1
    P1R1 0 /
    P1R2 1 0.595
    P2R1 0 /
    P2R2 0 /
    P3R1 1 0.205
    P3R2 0 /
    P4R1 0 /
    P4R2 1 0.185
    P5R1 1 0.545
    P5R2 0 /
    P6R1 0 /
    P6R2 1 0.145
  • FIG. 2 and FIG. 3 respectively show a longitudinal aberration and a lateral color of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing through the camera optical lens 10 of the first embodiment. FIG. 4 is a schematic diagram showing a field curvature and a distortion of light with a wavelength of 555 nm after passing through the camera optical lens 10 of the first embodiment. A field curvature S in FIG. 4 is a field curvature in the sagittal direction and T is a field curvature in a tangential direction.
  • Table 17 below shows values corresponding to the parameters specified in the conditional expressions for various numerical values in the first, second, third and fourth embodiment.
  • As shown in Table 17, the camera optical lens in the first embodiment satisfies each conditional expression.
  • In this embodiment, an entrance pupil diameter ENPD of the camera optical lens 10 is 1.297 mm, the full field image height IH is 2.920 mm, and the field of view FOV in a diagonal direction is 87.95°. The camera optical lens 10 meets the design requirements for large aperture, wide angle and ultra-thinning, its on-axis and off-axis aberrations are fully corrected, and it has excellent optical characteristics.
    • Second Embodiment
  • The second embodiment is basically the same as the first embodiment, and involves symbols having the same meanings as the first embodiment. Only differences therebetween will be listed below.
  • In this embodiment, the object side surface of the fourth lens L4 is convex at a paraxial position.
  • Table 5 and Table 6 show design data of the camera optical lens 20 according to the second embodiment of the present application.
  • TABLE 5
    R d nd vd
    S1 ∞ d0= −0.225
    R1 1.000 d1= 0.404 nd1 1.5440 v1 56.08
    R2 3.417 d2= 0.040
    R3 13.498 d3= 0.191 nd2 1.6913 v2 19.24
    R4 4.009 d4= 0.152
    R5 24.205 d5= 0.222 nd3 1.6173 v3 26.22
    R6 −23.039 d6= 0.196
    R7 232.359 d7= 0.191 nd4 1.6497 v4 21.45
    R8 8.340 d8= 0.370
    R9 2.913 d9= 0.455 nd5 1.5440 v5 56.06
    R10 −4.545 d10= 0.351
    R11 −1.549 d11= 0.268 nd6 1.5352 v6 56.11
    R12 2.726 d12= 0.100
    R13 ∞ d13= 0.110 ndg 1.5168 vg 64.17
    R14 ∞ d13= 0.250
  • Table 6 shows aspheric surface data of respective lenses in the camera optical lens 20 according to the second embodiment of the present application.
  • TABLE 6
    Conic coefficient Aspheric coefficient
    k A4 A6 A8 A10 A12
    R1 −1.1035E+00  1.2206E−01 3.2901E−01 −3.5282E+00 2.5424E+01 −1.1445E+02
    R2  4.5589E+00 −2.4150E−01 −1.0374E−01  −9.7797E−01 1.9499E+01 −1.1991E+02
    R3  2.4577E+02 −1.4466E−01 3.2026E−01 −1.0609E−01 1.1336E+01 −8.1668E+01
    R4 −4.8960E+01  1.6403E−01 1.3330E+00 −1.7322E+01 1.9884E+02 −1.3629E+03
    R5  1.4947E+03 −2.6568E−01 1.5450E+00 −2.1050E+01 1.7821E+02 −1.0331E+03
    R6  6.7258E+02 −3.1417E−01 8.2802E−01 −1.7526E+00 −3.1789E+01   2.9866E+02
    R7  9.8548E+04 −7.8273E−01 1.5543E+00 −1.7343E+00 −2.4425E+01   1.7251E+02
    R8 −7.3387E+02 −6.0829E−01 1.3375E+00 −3.6345E+00 8.3772E+00 −1.4199E+01
    R9 −2.7814E+01 −1.8392E−01 2.0331E−01 −6.7537E−01 1.4079E+00 −1.8620E+00
    R10  5.7181E+00 −2.0377E−01 1.9110E−01 −3.1927E−01 8.1337E−01 −1.1423E+00
    R11 −1.5932E+00 −8.9037E−01 1.6894E+00 −1.5957E+00 9.2938E−01 −3.4979E−01
    R12 −6.8192E+01 −4.2949E−01 6.9812E−01 −6.3674E−01 3.6582E−01 −1.3966E−01
    Conic coefficient Aspheric coefficient
    k A14 A16 A18 A20
    R1 −1.1035E+00 3.1320E+02 −5.1072E+02 4.3778E+02 −1.4816E+02
    R2  4.5589E+00 3.8019E+02 −6.3735E+02 5.1539E+02 −1.5725E+02
    R3  2.4577E+02 2.7518E+02 −4.5843E+02 3.7642E+02 −1.4447E+02
    R4 −4.8960E+01 5.7351E+03 −1.4474E+04 2.0152E+04 −1.1793E+04
    R5  1.4947E+03 3.8994E+03 −9.1085E+03 1.1799E+04 −6.3087E+03
    R6  6.7258E+02 −1.3040E+03   3.1729E+03 −4.1575E+03   2.3111E+03
    R7  9.8548E+04 −5.9256E+02   1.1495E+03 −1.2113E+03   5.3519E+02
    R8 −7.3387E+02 1.6241E+01 −1.1269E+01 4.1607E+00 −6.2014E−01
    R9 −2.7814E+01 1.4195E+00 −5.9693E−01 1.2913E−01 −1.1248E−02
    R10  5.7181E+00 8.3597E−01 −3.2963E−01 6.6843E−02 −5.4827E−03
    R11 −1.5932E+00 8.5393E−02 −1.3092E−02 1.1486E−03 −4.4108E−05
    R12 −6.8192E+01 3.5453E−02 −5.7579E−03 5.4031E−04 −2.2172E−05
  • Table 7 and Table 8 show design data of inflexion points and arrest points of respective lenses in the camera optical lens 20 according to the second embodiment of the present application.
  • TABLE 7
    Number of Inflexion point Inflexion point Inflexion point
    inflexion points position 1 position 2 position 3
    P1R1 1 0.635 / /
    P1R2
    1 0.325 / /
    P2R1
    0 / / /
    P2R2
    0 / / /
    P3R1 2 0.135 0.575 /
    P3R2 0 / / /
    P4R1
    1 0.025 / /
    P4R2
    1 0.125 / /
    P5R1 2 0.345 1.195 /
    P5R2 1 1.285 / /
    P6R1 2 0.805 2.045 /
    P6R2 3 0.225 2.055 2.225
  • TABLE 8
    Number of Arrest point Arrest point
    arrest points position 1 position 2
    P1R1 0 / /
    P1R2 1 0.595 /
    P2R1 0 / /
    P2R2 0 / /
    P3R1 1 0.225 /
    P3R2 0 / /
    P4R1 1 0.035 /
    P4R2 1 0.215 /
    P5R1 1 0.615 /
    P5R2 0 / /
    P6R1 2 2.015 2.065
    P6R2 1 0.455 /
  • FIG. 6 and FIG. 7 respectively show a longitudinal aberration and a lateral color of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing through the camera optical lens 20 of the second embodiment. FIG. 8 shows a schematic diagram of a field curvature and a distortion of light with a wavelength of 555 nm after passing through the camera optical lens 20 of the second embodiment.
  • As shown in Table 17, the camera optical lens in the second embodiment satisfies each conditional expression.
  • In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 20 is 1.296 mm, the full field image height IH is 2.920 mm, and the field of view FOV in a diagonal direction is 87.53°. The camera optical lens 20 meets the design requirements for large aperture, wide angle and ultra-thinning, its on-axis and off-axis aberrations are fully corrected, and it has excellent optical characteristics.
    • Third Embodiment
  • The third embodiment is basically the same as the first embodiment, and involves the symbols having the same meanings as the first embodiment. Only differences therebetween will be listed below.
  • In this embodiment, the object side surface of the fourth lens L4 is convex at a paraxial position.
  • Table 9 and Table 10 show design data of the camera optical lens 30 according to the third embodiment of the present application.
  • TABLE 9
    R d nd vd
    S1 ∞ d0= −0.200
    R1 1.065 d1= 0.332 nd1 1.5440 v1 56.08
    R2 3.204 d2= 0.040
    R3 7.365 d3= 0.191 nd2 1.6913 v2 19.24
    R4 3.588 d4= 0.207
    R5 138.499 d5= 0.228 nd3 1.6173 v3 26.22
    R6 −20.235 d6= 0.206
    R7 4.001 d7= 0.224 nd4 1.6497 v4 21.45
    R8 3.900 d8= 0.444
    R9 2.876 d9= 0.402 nd5 1.5440 v5 56.06
    R10 −4.428 d10= 0.358
    R11 −1.838 d11= 0.268 nd6 1.5352 v6 56.11
    R12 1.574 d12= 0.100
    R13 ∞ d13= 0.110 ndg 1.5168 vg 64.17
    R14 ∞ d13= 0.240
  • Table 10 shows aspheric surface data of respective lenses in the camera optical lens 30 according to the third embodiment of the present application.
  • TABLE 10
    Conic coefficient Aspheric coefficient
    k A4 A6 A8 A10 A12
    R1 −1.6126E+00  1.4106E−01 3.4685E−01 −4.1913E+00 2.7909E+01 −1.1721E+02
    R2  4.5589E+00 −2.4150E−01 −1.0374E−01  −9.7797E−01 1.9499E+01 −1.1991E+02
    R3  5.3278E+01 −1.4658E−01 4.1353E−01 −2.2177E+00 2.8777E+01 −1.6651E+02
    R4 −5.1736E+01  2.3233E−01 4.4565E−01 −4.9841E+00 7.1385E+01 −5.3129E+02
    R5  1.5000E+03 −2.1959E−01 5.8217E−01 −4.4230E+00 2.0194E+01 −7.4284E+01
    R6  6.2278E+02 −3.2913E−01 6.0169E−01 −5.1232E−01 −2.2046E+01   1.6861E+02
    R7 −3.0645E+02  6.0534E−02 −2.9113E+00   1.9468E+01 −8.8033E+01   2.6405E+02
    R8 −4.5019E+01 −3.0852E−01 4.9965E−01 −9.3205E−01 1.4071E+00 −1.7410E+00
    R9 −1.8312E+01 −2.8344E−02 −1.0994E−01  −4.4857E−02 4.5187E−01 −8.6211E−01
    R10  4.8536E+00  1.0440E−02 −2.7340E−01   5.0619E−01 −2.2573E−01  −2.9679E−01
    R11 −1.7537E+00 −8.7026E−01 1.6542E+00 −1.5237E+00 8.5697E−01 −3.1205E−01
    R12 −2.8809E+01 −4.2517E−01 6.5152E−01 −5.3092E−01 2.6535E−01 −8.5698E−02
    Conic coefficient Aspheric coefficient
    k A14 A16 A18 A20
    R1 −1.6126E+00 2.9695E+02 −4.5245E+02 3.6997E+02 −1.2132E+02
    R2  4.5589E+00 3.8019E+02 −6.3735E+02 5.1539E+02 −1.5725E+02
    R3  5.3278E+01 5.3887E+02 −9.6499E+02 9.0380E+02 −3.6540E+02
    R4 −5.1736E+01 2.3435E+03 −6.1080E+03 8.7560E+03 −5.3116E+03
    R5  1.5000E+03 2.3338E+02 −5.6570E+02 8.4254E+02 −4.9738E+02
    R6  6.2278E+02 −6.3839E+02   1.3696E+03 −1.5884E+03   7.8345E+02
    R7 −3.0645E+02 −5.2384E+02   6.5515E+02 −4.6771E+02   1.4471E+02
    R8 −4.5019E+01 1.4682E+00 −7.2730E−01 1.8747E−01 −1.9318E−02
    R9 −1.8312E+01 7.3052E−01 −3.0975E−01 6.4807E−02 −5.3505E−03
    R10  4.8536E+00 3.9669E−01 −1.8878E−01 4.1590E−02 −3.5588E−03
    R11 −1.7537E+00 7.4163E−02 −1.1144E−02 9.6357E−04 −3.6617E−05
    R12 −2.8809E+01 1.7940E−02 −2.3546E−03 1.7642E−04 −5.7654E−06
  • Table 11 and Table 12 show design data of inflexion points and arrest points of respective lenses in the camera optical lens 30 according to the third embodiment of the present application.
  • TABLE 11
    Number of Inflexion Inflexion Inflexion Inflexion Inflexion
    inflexion point point point point point
    points position
    1 position 2 position 3 position 4 position 5
    P1R1 1 0.615 / / / /
    P1R2
    1 0.345 / / / /
    P2R1
    0 / / / / /
    P2R2
    0 / / / / /
    P3R1 2 0.055 0.585 / / /
    P3R2
    0 / / / / /
    P4R1
    1 0.235 / / / /
    P4R2
    1 0.265 / / / /
    P5R1 2 0.465 1.235 / / /
    P5R2
    1 1.305 / / / /
    P6R1 2 0.765 2.015 / / /
    P6R2 5 0.265 0.835 1.075 2.225 2.325
  • TABLE 12
    Number of arrest points Arrest point position 1
    P1R1 0 /
    P1R2 1 0.615
    P2R1 0 /
    P2R2 0 /
    P3R1 1 0.095
    P3R2 0 /
    P4R1 1 0.415
    P4R2 1 0.495
    P5R1 1 0.765
    P5R2 0 /
    P6R1 0 /
    P6R2 1 0.635
  • FIG. 10 and FIG. 11 respectively show a longitudinal aberration and a lateral color of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing through the camera optical lens 30 of the third embodiment. FIG. 12 shows a schematic diagram of a field curvature and a distortion of light with a wavelength of 555 nm after passing through the camera optical lens 30 of the third embodiment.
  • Table 17 below lists the values corresponding to respective conditional expressions in this embodiment according to the above conditional expressions. Obviously, the camera optical system of this embodiment satisfies the above conditional expressions.
  • In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 30 is 1.289 mm, the full field image height IH is 2.920 mm, and the field of view FOV in a diagonal direction is 87.75°. The camera optical lens 30 meets the design requirements for large aperture, wide angle and ultra-thinning, its on-axis and off-axis aberrations are fully corrected, and it has excellent optical characteristics.
    • Fourth Embodiment
  • The fourth embodiment is basically the same as the first embodiment, and involves the symbols having the same meanings as the first embodiment. Only differences therebetween will be listed below.
  • In this embodiment, the object side surface of the fourth lens L4 is convex at a paraxial position.
  • Table 13 and Table 14 show design data of the camera optical lens 40 according to the fourth embodiment of the present application.
  • TABLE 13
    R d nd vd
    S1 ∞ d0= −0.200
    R1 1.007 d1= 0.393 nd1 1.5440 v1 56.08
    R2 3.417 d2= 0.040
    R3 14.871 d3= 0.191 nd2 1.6913 v2 19.24
    R4 4.100 d4= 0.152
    R5 24.178 d5= 0.222 nd3 1.6173 v3 26.22
    R6 −22.722 d6= 0.219
    R7 214.806 d7= 0.217 nd4 1.6497 v4 21.45
    R8 6.119 d8= 0.327
    R9 3.024 d9= 0.454 nd5 1.5440 v5 56.06
    R10 −4.802 d10= 0.429
    R11 −1.591 d11= 0.268 nd6 1.5352 v6 56.11
    R12 13.714 d12= 0.100
    R13 ∞ d13= 0.110 ndg 1.5168 vg 64.17
    R14 ∞ d13= 0.258
  • Table 14 shows aspheric surface data of respective lenses in the camera optical lens 40 according to the fourth embodiment of the present application.
  • TABLE 14
    Conic coefficient Aspheric coefficient
    k A4 A6 A8 A10 A12
    R1 −1.1778E+00  1.3212E−01 1.8036E−01 −1.6581E+00 1.1346E+01 −5.3278E+01
    R2  4.5589E+00 −2.4150E−01 −1.0374E−01  −9.7797E−01 1.9499E+01 −1.1991E+02
    R3  3.6939E+02 −1.2887E−01 3.3354E−01 −3.1885E−01 1.4004E+01 −1.0052E+02
    R4 −4.6702E+01  1.7678E−01 9.1056E−01 −8.2160E+00 9.4207E+01 −6.4471E+02
    R5  1.5000E+03 −2.4956E−01 9.9370E−01 −1.3284E+01 1.1104E+02 −6.5801E+02
    R6 −6.4342E+02 −3.0306E−01 6.2001E−01 −1.9586E−01 −4.0349E+01   3.3192E+02
    R7  8.1368E+04 −7.9914E−01 2.5968E+00 −9.1087E+00 6.8869E+00  7.9361E+01
    R8 −4.9325E+02 −6.0602E−01 1.8290E+00 −5.6929E+00 1.2635E+01 −1.9059E+01
    R9 −2.3323E+01 −4.5938E−01 9.5109E−01 −1.7423E+00 2.3323E+00 −2.2277E+00
    R10  5.7181E+00 −4.3222E−01 7.7030E−01 −1.0792E+00 1.3781E+00 −1.3266E+00
    R11 −1.6487E+00 −6.2553E−01 1.0292E+00 −8.8011E−01 4.8537E−01 −1.7774E−01
    R12 −2.8128E+01 −1.1771E−01 1.0627E−01 −7.8289E−02 4.1497E−02 −1.7211E−02
    Conic coefficient Aspheric coefficient
    k A14 A16 A18 A20
    R1 −1.1778E+00 1.5497E+02 −2.7572E+02 2.5514E+02 −9.0950E+01
    R2  4.5589E+00 3.8019E+02 −6.3735E+02 5.1539E+02 −1.5725E+02
    R3  3.6939E+02 3.4709E+02 −6.0561E+02 5.2803E+02 −2.0626E+02
    R4 −4.6702E+01 2.7039E+03 −6.7861E+03 9.4134E+03 −5.4520E+03
    R5  1.5000E+03 2.5696E+03 −6.2386E+03 8.3960E+03 −4.6265E+03
    R6 −6.4342E+02 −1.3773E+03   3.2435E+03 −4.1392E+03   2.2490E+03
    R7  8.1368E+04 −3.8776E+02   8.3150E+02 −9.0324E+02   3.9894E+02
    R8 −4.9325E+02 1.8761E+01 −1.1232E+01 3.6421E+00 −4.8555E−01
    R9 −2.3323E+01 1.3775E+00 −5.0582E−01 9.9519E−02 −8.0685E−03
    R10  5.7181E+00 8.1231E−01 −2.9247E−01 5.6392E−02 −4.4878E−03
    R11 −1.6487E+00 4.2810E−02 −6.5173E−03 5.6917E−04 −2.1766E−05
    R12 −2.8128E+01 5.3160E−03 −1.0955E−03 1.2923E−04 −6.4455E−06
  • Tables 15 and 16 show design data of inflexion points and arrest points of respective lenses in the camera optical lens 40 according to the fourth embodiment of the present application.
  • TABLE 15
    Number of Inflexion point Inflexion point Inflexion point
    inflexion points position 1 position 2 position 3
    P1R1 1 0.625 / /
    P1R2
    1 0.325 / /
    P2R1
    0 / / /
    P2R2
    0 / / /
    P3R1 2 0.135 0.575 /
    P3R2 0 / / /
    P4R1
    1 0.025 / /
    P4R2
    1 0.145 / /
    P5R1 2 0.265 1.215 /
    P5R2 1 1.345 / /
    P6R1 2 0.905 2.095 /
    P6R2 3 0.245 2.035 2.235
  • TABLE 16
    Number of Arrest point Arrest point
    arrest points position 1 position 2
    P1R1 0 / /
    P1R2 1 0.595 /
    P2R1 0 / /
    P2R2 0 / /
    P3R1 1 0.225 /
    P3R2 0 / /
    P4R1 1 0.035 /
    P4R2 1 0.255 /
    P5R1 1 0.515 /
    P5R2 0 / /
    P6R1 2 2.015 2.135
    P6R2 1 0.445 /
  • FIG. 14 and FIG. 15 respectively show a longitudinal aberration and a lateral color of light with wavelengths of 650 nm, 610 nm, 555 nm, 510 nm and 470 nm after passing through the camera optical lens 40 according to the fourth embodiment. FIG. 16 shows a schematic diagram of a field curvature and a distortion of light with a wavelength of 555 nm after passing through the camera optical lens 40 of the fourth embodiment.
  • Table 17 below lists values corresponding to respective conditional expressions in this embodiment according to the above conditional expressions. Obviously, the camera optical system of this embodiment satisfies the above conditional expressions.
  • In this embodiment, the entrance pupil diameter ENPD of the camera optical lens 40 is 1.289 mm, the full field image height IH is 2.920 mm, and the field of view FOV in the diagonal direction is 87.94°. The camera optical lens 40 meets the design requirements for large aperture, wide angle and ultra-thinning, its on-axis and off-axis aberrations are fully corrected, and it has excellent optical characteristics.
  • TABLE 17
    Parameter and
    conditional Embodi- Embodi- Embodi- Embodi-
    expression ment 1 ment 2 ment 3 ment 4
    f3/f 8.38 6.52 9.80 6.51
    d1/d2 10.13 10.10 8.30 9.83
    (R3 + R4)/ 1.68 1.85 2.90 1.76
    (R3 − R4)
    d8/d7 1.79 1.94 1.98 1.51
    f 2.918 2.916 2.900 2.900
    f1 2.431 2.445 2.772 2.475
    f2 −8.226 −8.241 −10.239 −8.173
    f3 24.459 19.024 28.420 18.879
    f4 −13.675 −13.208 −2013.155 −9.617
    f5 3.288 3.324 3.258 3.471
    f6 −1.938 −1.800 −1.537 −2.639
    f12 3.156 3.176 3.531 3.244
    FNO 2.25 2.25 2.25 2.25
    TTL 3.30 3.30 3.35 3.38
    IH 2.92 2.92 2.92 2.92
    FOV 87.95 87.53 87.75 87.94
  • Those of ordinary skill in the art can understand that the above-mentioned embodiments are specific embodiments for realizing the present application, and in practical applications, various changes can be made in form and detail without departing from the spirit and scope of the present application.

Claims (10)

What is claimed is:
1. A camera optical lens, comprising from an object side to an image side:
a first lens having positive refractive power;
a second lens having negative refractive power;
a third lens having positive refractive power;
a fourth lens having negative refractive power;
a fifth lens having positive refractive power; and
a sixth lens having negative refractive power,
wherein the camera optical lens satisfies:

6.50≤f3/f≤10.00;

1.50≤(R3+R4)/(R3−R4)≤3.00;

8.00≤d1/d2≤10.50; and

1.50≤d8/d7≤2.00,
where
f denotes a focal length of the camera optical lens,
f3 denotes a focal length of the third lens,
R3 denotes a curvature radius of an object side surface of the second lens,
R4 denotes a curvature radius of an image side surface of the second lens,
d1 denotes an on-axis thickness of the first lens,
d2 denotes an on-axis distance from an image side surface of the first lens to the object side surface of the second lens,
d7 denotes an on-axis thickness of the fourth lens, and
d8 denotes an on-axis distance from an image side surface of the fourth lens to an object side surface of the fifth lens.
2. The camera optical lens as described in claim 1, further satisfying:

−1.00≤f6/f≤−0.50,
where f6 denotes a focal length of the sixth lens.
3. The camera optical lens as described in claim 1, further satisfying:

0.42≤f1/f≤1.43;

−3.99≤(R1+R2)/(R1−R2)≤−1.22; and

0.05≤d1/TTL≤0.18,
where
f1 denotes a focal length of the first lens,
R1 denotes a curvature radius of an object side surface of the first lens,
R2 denotes a curvature radius of the image side surface of the first lens, and
TTL denotes a total optical length from the object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
4. The camera optical lens as described in claim 1, further satisfying:

−7.06≤f2/f≤−1.88; and

0.03≤d3/TTL≤0.09,
where
f2 denotes a focal length of the second lens,
d3 denotes an on-axis thickness of the second lens, and
TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
5. The camera optical lens as described in claim 1, further satisfying:

−0.35≤(R5+R6)/(R5−R6)≤1.12; and

0.03≤d5/TTL≤0.10,
where
R5 denotes a curvature radius of an object side surface of the third lens,
R6 denotes a curvature radius of an image side surface of the third lens,
d5 denotes an on-axis thickness of the third lens, and
TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
6. The camera optical lens as described in claim 1, further satisfying:

−1388.38≤f4/f≤−2.21;

0.42≤(R7+R8)/(R7−R8)≤117.34; and

0.03≤d7/TTL≤0.10,
where
f4 denotes a focal length of the fourth lens,
R7 denotes a curvature radius of an object side surface of the fourth lens,
R8 denotes a curvature radius of the image side surface of the fourth lens, and
TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
7. The camera optical lens as described in claim 1, further satisfying:

0.56≤f5/f≤1.80;

−0.45≤(R9+R10)/(R9−R10)≤−0.14; and

0.06≤d9/TTL≤0.21,
where
f5 denotes a focal length of the fifth lens,
R9 denotes a curvature radius of the object side surface of the fifth lens,
R10 denotes a curvature radius of an image side surface of the fifth lens,
d9 denotes an on-axis thickness of the fifth lens, and
TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
8. The camera optical lens as described in claim 1, further satisfying:

−1.76≤(R11+R12)/(R11−R12)≤0.12; and

0.04≤d11/TTL≤0.12,
where
R11 denotes a curvature radius of an object side surface of the sixth lens,
R12 denotes a curvature radius of an image side surface of the sixth lens,
d11 denotes an on-axis thickness of the sixth lens, and
TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
9. The camera optical lens as described in claim 1, further satisfying:

TTL/IH≤1.17,
where
IH denotes an image height of the camera optical lens, and
TTL denotes a total optical length from an object side surface of the first lens to an image plane of the camera optical lens along an optic axis.
10. The camera optical lens as described in claim 1, further satisfying:

FOV≥86.00°,
where FOV denotes a field of view of the camera optical lens.
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